Question:
A carrier wave of peak voltage $14\, V$ is used for transmitting a message signal. The peak voltage of modulating signal given to achieve a modulation index of $80\%$ will be:
A carrier wave of peak voltage $14\, V$ is used for transmitting a message signal. The peak voltage of modulating signal given to achieve a modulation index of $80\%$ will be:
Updated On: Aug 5, 2024
- $7\, V$
- $28\, V$
- $11.2\, V$
- $22.4\, V$
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The Correct Option is C
Solution and Explanation
Amplitude of carrier wave is $A_{ c }=14\, V$
Index is $\mu=80 \%=0.80$
Amplitude of modulating signal is given by
$\mu=\frac{A_{ m }}{A_{ c }}$
$\Rightarrow A_{ m }=\mu A_{ c }$
$\Rightarrow A_{ m }=0.8 \times 14=11.2\, V$
Index is $\mu=80 \%=0.80$
Amplitude of modulating signal is given by
$\mu=\frac{A_{ m }}{A_{ c }}$
$\Rightarrow A_{ m }=\mu A_{ c }$
$\Rightarrow A_{ m }=0.8 \times 14=11.2\, V$
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A system that describes the information exchange between two points is called the communication system. The transmission and reception process of information is called communication. The major elements of communication are such as:
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- Public Switched Telephone network
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Turning on Signal specification or technology, the communication system is categorized as follows:
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- In Digital technology, the data are created and processed in two states: High (represented as 1) and Low (represented as 0). Also this technology stores and transmits data in the form of 1's and 0's.
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